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Further improvements to the export logic
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,188 @@ | ||
| (function (global, factory) { | ||
| if (typeof define === "function" && define.amd) { | ||
| define([], factory); | ||
| } else if (typeof exports !== "undefined") { | ||
| factory(); | ||
| } else { | ||
| var mod = { | ||
| exports: {} | ||
| }; | ||
| factory(); | ||
| global.FileSaver = mod.exports; | ||
| } | ||
| })(this, function () { | ||
| "use strict"; | ||
|
|
||
| /* | ||
| * FileSaver.js | ||
| * A saveAs() FileSaver implementation. | ||
| * | ||
| * By Eli Grey, http://eligrey.com | ||
| * | ||
| * License : https://github.com/eligrey/FileSaver.js/blob/master/LICENSE.md (MIT) | ||
| * source : http://purl.eligrey.com/github/FileSaver.js | ||
| */ | ||
| // The one and only way of getting global scope in all environments | ||
| // https://stackoverflow.com/q/3277182/1008999 | ||
| var _global = typeof window === 'object' && window.window === window ? window : typeof self === 'object' && self.self === self ? self : typeof global === 'object' && global.global === global ? global : void 0; | ||
|
|
||
| function bom(blob, opts) { | ||
| if (typeof opts === 'undefined') opts = { | ||
| autoBom: false | ||
| };else if (typeof opts !== 'object') { | ||
| console.warn('Deprecated: Expected third argument to be a object'); | ||
| opts = { | ||
| autoBom: !opts | ||
| }; | ||
| } // prepend BOM for UTF-8 XML and text/* types (including HTML) | ||
| // note: your browser will automatically convert UTF-16 U+FEFF to EF BB BF | ||
|
|
||
| if (opts.autoBom && /^\s*(?:text\/\S*|application\/xml|\S*\/\S*\+xml)\s*;.*charset\s*=\s*utf-8/i.test(blob.type)) { | ||
| return new Blob([String.fromCharCode(0xFEFF), blob], { | ||
| type: blob.type | ||
| }); | ||
| } | ||
|
|
||
| return blob; | ||
| } | ||
|
|
||
| function download(url, name, opts) { | ||
| var xhr = new XMLHttpRequest(); | ||
| xhr.open('GET', url); | ||
| xhr.responseType = 'blob'; | ||
|
|
||
| xhr.onload = function () { | ||
| saveAs(xhr.response, name, opts); | ||
| }; | ||
|
|
||
| xhr.onerror = function () { | ||
| console.error('could not download file'); | ||
| }; | ||
|
|
||
| xhr.send(); | ||
| } | ||
|
|
||
| function corsEnabled(url) { | ||
| var xhr = new XMLHttpRequest(); // use sync to avoid popup blocker | ||
|
|
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| xhr.open('HEAD', url, false); | ||
|
|
||
| try { | ||
| xhr.send(); | ||
| } catch (e) {} | ||
|
|
||
| return xhr.status >= 200 && xhr.status <= 299; | ||
| } // `a.click()` doesn't work for all browsers (#465) | ||
|
|
||
|
|
||
| function click(node) { | ||
| try { | ||
| node.dispatchEvent(new MouseEvent('click')); | ||
| } catch (e) { | ||
| var evt = document.createEvent('MouseEvents'); | ||
| evt.initMouseEvent('click', true, true, window, 0, 0, 0, 80, 20, false, false, false, false, 0, null); | ||
| node.dispatchEvent(evt); | ||
| } | ||
| } // Detect WebView inside a native macOS app by ruling out all browsers | ||
| // We just need to check for 'Safari' because all other browsers (besides Firefox) include that too | ||
| // https://www.whatismybrowser.com/guides/the-latest-user-agent/macos | ||
|
|
||
|
|
||
| var isMacOSWebView = /Macintosh/.test(navigator.userAgent) && /AppleWebKit/.test(navigator.userAgent) && !/Safari/.test(navigator.userAgent); | ||
| var saveAs = _global.saveAs || ( // probably in some web worker | ||
| typeof window !== 'object' || window !== _global ? function saveAs() {} | ||
| /* noop */ | ||
| // Use download attribute first if possible (#193 Lumia mobile) unless this is a macOS WebView | ||
| : 'download' in HTMLAnchorElement.prototype && !isMacOSWebView ? function saveAs(blob, name, opts) { | ||
| var URL = _global.URL || _global.webkitURL; | ||
| var a = document.createElement('a'); | ||
| name = name || blob.name || 'download'; | ||
| a.download = name; | ||
| a.rel = 'noopener'; // tabnabbing | ||
| // TODO: detect chrome extensions & packaged apps | ||
| // a.target = '_blank' | ||
|
|
||
| if (typeof blob === 'string') { | ||
| // Support regular links | ||
| a.href = blob; | ||
|
|
||
| if (a.origin !== location.origin) { | ||
| corsEnabled(a.href) ? download(blob, name, opts) : click(a, a.target = '_blank'); | ||
| } else { | ||
| click(a); | ||
| } | ||
| } else { | ||
| // Support blobs | ||
| a.href = URL.createObjectURL(blob); | ||
| setTimeout(function () { | ||
| URL.revokeObjectURL(a.href); | ||
| }, 4E4); // 40s | ||
|
|
||
| setTimeout(function () { | ||
| click(a); | ||
| }, 0); | ||
| } | ||
| } // Use msSaveOrOpenBlob as a second approach | ||
| : 'msSaveOrOpenBlob' in navigator ? function saveAs(blob, name, opts) { | ||
| name = name || blob.name || 'download'; | ||
|
|
||
| if (typeof blob === 'string') { | ||
| if (corsEnabled(blob)) { | ||
| download(blob, name, opts); | ||
| } else { | ||
| var a = document.createElement('a'); | ||
| a.href = blob; | ||
| a.target = '_blank'; | ||
| setTimeout(function () { | ||
| click(a); | ||
| }); | ||
| } | ||
| } else { | ||
| navigator.msSaveOrOpenBlob(bom(blob, opts), name); | ||
| } | ||
| } // Fallback to using FileReader and a popup | ||
| : function saveAs(blob, name, opts, popup) { | ||
| // Open a popup immediately do go around popup blocker | ||
| // Mostly only available on user interaction and the fileReader is async so... | ||
| popup = popup || open('', '_blank'); | ||
|
|
||
| if (popup) { | ||
| popup.document.title = popup.document.body.innerText = 'downloading...'; | ||
| } | ||
|
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| if (typeof blob === 'string') return download(blob, name, opts); | ||
| var force = blob.type === 'application/octet-stream'; | ||
|
|
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| var isSafari = /constructor/i.test(_global.HTMLElement) || _global.safari; | ||
|
|
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| var isChromeIOS = /CriOS\/[\d]+/.test(navigator.userAgent); | ||
|
|
||
| if ((isChromeIOS || force && isSafari || isMacOSWebView) && typeof FileReader !== 'undefined') { | ||
| // Safari doesn't allow downloading of blob URLs | ||
| var reader = new FileReader(); | ||
|
|
||
| reader.onloadend = function () { | ||
| var url = reader.result; | ||
| url = isChromeIOS ? url : url.replace(/^data:[^;]*;/, 'data:attachment/file;'); | ||
| if (popup) popup.location.href = url;else location = url; | ||
| popup = null; // reverse-tabnabbing #460 | ||
| }; | ||
|
|
||
| reader.readAsDataURL(blob); | ||
| } else { | ||
| var URL = _global.URL || _global.webkitURL; | ||
| var url = URL.createObjectURL(blob); | ||
| if (popup) popup.location = url;else location.href = url; | ||
| popup = null; // reverse-tabnabbing #460 | ||
|
|
||
| setTimeout(function () { | ||
| URL.revokeObjectURL(url); | ||
| }, 4E4); // 40s | ||
| } | ||
| }); | ||
| _global.saveAs = saveAs.saveAs = saveAs; | ||
|
|
||
| if (typeof module !== 'undefined') { | ||
| module.exports = saveAs; | ||
| } | ||
| }); |
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